Category: Uncategorized
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1) Bubble-Column Attractor — make a vertical bubble “highway” that draws fish like a magnet Why it’s mind-blowing: many fish inspect rising bubble columns because bubbles concentrate food, odors and create micro-currents. This hack creates a tall, visible bubble column from a tiny hand pump / squeeze bottle — no batteries — that forms a…
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1) Parabolic Phone Mic — “Hear a Whisper Across the Room” Hook: Turn a cheap bowl or plastic lid into a directional parabolic microphone for your phone — whisper from 6–8 meters and your phone records it like it was inches away.Why it’s mind-blowing: parabolic reflectors concentrate sound waves to a focal point — people…
